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https://www.readbyqxmd.com/read/28942194/the-2-oxoglutarate-carrier-promotes-liver-cancer-by-sustaining-mitochondrial-gsh-despite-cholesterol-loading
#1
Anna Baulies, Joan Montero, Nuria Matías, Naroa Insausti, Oihana Terrones, Gorka Basañez, Carmen Vallejo, Laura Conde de La Rosa, Laura Martinez, David Robles, Albert Morales, Joaquin Abian, Montserrat Carrascal, Keigo Machida, Dinesh B U Kumar, Hidekazu Tsukamoto, Neil Kaplowitz, Carmen Garcia-Ruiz, José C Fernández-Checa
Cancer cells exhibit mitochondrial cholesterol (mt-cholesterol) accumulation, which contributes to cell death resistance by antagonizing mitochondrial outer membrane (MOM) permeabilization. Hepatocellular mt-cholesterol loading, however, promotes steatohepatitis, an advanced stage of chronic liver disease that precedes hepatocellular carcinoma (HCC), by depleting mitochondrial GSH (mGSH) due to a cholesterol-mediated impairment in mGSH transport. Whether and how HCC cells overcome the restriction of mGSH transport imposed by mt-cholesterol loading to support mGSH uptake remains unknown...
September 14, 2017: Redox Biology
https://www.readbyqxmd.com/read/28939491/fab-antibody-fragment-functionalized-liposomes-for-specific-targeting-of-antigen-positive-cells
#2
Anna Ohradanova-Repic, Eugénia Nogueira, Ingrid Hartl, Andreia C Gomes, Ana Preto, Eva Steinhuber, Vanessa Mühlgrabner, Marko Repic, Mario Kuttke, Alexander Zwirzitz, Marek Prouza, Miloslav Suchanek, Gordana Wozniak-Knopp, Vaclav Horejsi, Gernot Schabbauer, Artur Cavaco-Paulo, Hannes Stockinger
Liposomes functionalized with monoclonal antibodies or their antigen-binding fragments have attracted much attention as specific drug delivery devices for treatment of various diseases including cancer. The conjugation of antibodies to liposomes is usually achieved by covalent coupling using cross-linkers in a reaction that might adversely affect the characteristics of the final product. Here we present an alternative strategy for liposome functionalization: we created a recombinant Fab antibody fragment genetically fused on its C-terminus to the hydrophobic peptide derived from pulmonary surfactant protein D, which became inserted into the liposomal bilayer during liposomal preparation and anchored the Fab onto the liposome surface...
September 19, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28938689/efficacy-and-safety-of-traditional-chemotherapies-for-patients-with-ovarian-neoplasm-a-network-meta-analysis
#3
REVIEW
Lili Yang, Gongliang Guo, Liqun Sun, Chenhao Li, Haipeng Zhang
BACKGROUND: Ovarian neoplasm is a kind of high risky cancer among female. This paper assessed the efficacy and safety of twelve therapies and figured out the superior chemotherapeutic drug for ovarian cancer through network meta-analysis (NMA). METHOD: Eligible randomized controlled trials (RCTs) were retrieved from electronic databases. Primary outcomes concerning efficacy, overall survival (OS) and progression-free survival (PFS), were presented as hazard ratio (HR) and the associated 95% credible interval(CrI), while outcomes concerning safety were assessed by odds ratio (OR) and the corresponding 95% CrI...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28937321/enhancement-of-radiotherapy-efficacy-by-pleiotropic-liposomes-encapsulated-paclitaxel-and-perfluorotributylamine
#4
Xing Jiang, Baoli Zhang, Zaigang Zhou, Lingtong Meng, Zhiling Sun, Yun Xu, Qiuping Xu, Ahu Yuan, Lixia Yu, Hanqing Qian, Jinhui Wu, Yiqiao Hu, Baorui Liu
Paclitaxel (PTX) is widely used as a radiosensitizer in the clinical treatment of cancer. However, the efficacy of chemoradiotherapy is limited by the hostility of the tumor microenvironment such as hypoxia. To overcome this constraint, we designed pleiotropic radiotherapy sensitized liposomes containing perfluorotributylamine (PFTBA) and PTX. The results showed that liposomes significantly accumulated in the tumor site. PFTBA in liposomes dramatically reversed tumor hypoxia and improved the sensitivity of tumor radiotherapy...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28937293/enhancing-tumor-specific-immune-responses-by-transcutaneous-vaccination
#5
Hanadi Saliba, Béatrice Heurtault, Hasnaa Bouharoun-Tayoun, Vincent Flacher, Benoît Frisch, Sylvie Fournel, Soulaima Chamat
Introduction Our understanding of the involvement of the immune system in cancer control has increased over recent years. However, the development of cancer vaccines intended to reverse tumor-induced immune tolerance remains slow as most current vaccine candidates exhibit limited clinical efficacy. The skin is particularly rich with multiple subsets of dendritic cells (DCs) that are involved to varying degrees in the induction of robust immune responses. Transcutaneous administration of cancer vaccines may therefore harness the immune potential of these DCs, however, this approach is hampered by the impermeability of the stratum corneum...
September 22, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28935273/a-multicenter-open-label-expanded-phase-2-study-to-evaluate-the-safety-and-efficacy-of-etirinotecan-pegol-a-polymer-conjugate-of-irinotecan-in-women-with-recurrent-platinum-resistant-or-refractory-ovarian-cancer
#6
G Rustin, I Vergote, J P Micha, L R Duska, N Reed, J Bendell, D Spitz, G Dark, U Hoch, M Tagliaferri, A L Hannah, A A Garcia
OBJECTIVE: Etirinotecan pegol (EP) is a novel polyethylene glycol conjugated form of irinotecan with documented activity in platinum-resistant ovarian cancer (PROC). We report the results of the expanded portion of a phase II study of EP in patients with PROC who received prior pegylated liposomal doxorubicin (PLD) or who were unable to receive it. METHODS: This multicenter, open-label, phase II study evaluated EP q21d for PROC. The primary endpoint was objective response rate (ORR) by Response Evaluation Criteria in Solid Tumors version 1...
September 18, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28932942/required-hydrophobicity-of-fluorescent-reporters-for-phosphatidylinositol-family-of-lipid-enzymes
#7
Jarod Waybright, Weigang Huang, Angela Proctor, Xiaoyang Wang, Nancy L Allbritton, Qisheng Zhang
The phosphatidylinositol (PtdIns) family of lipids plays important roles in cell differentiation, proliferation, and migration. Abnormal expression, mutation, or regulation of their metabolic enzymes has been associated with various human diseases such as cancer, diabetes, and bipolar disorder. Recently, fluorescent derivatives have increasingly been used as chemical probes to monitor either lipid localization or enzymatic activity. However, the requirements of a good probe have not been well defined, particularly modifications on the diacylglycerol side chain partly due to challenges in generating PtdIns lipids...
September 20, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28932113/cationic-lipid-based-nanoparticles-mediate-functional-delivery-of-acetate-to-tumor-cells-in-vivo-leading-to-significant-anticancer-effects
#8
Leigh P Brody, Meliz Sahuri-Arisoylu, James R Parkinson, Harry G Parkes, Po Wah So, Nabil Hajji, E Louise Thomas, Gary S Frost, Andrew D Miller, Jimmy D Bell
Metabolic reengineering using nanoparticle delivery represents an innovative therapeutic approach to normalizing the deregulation of cellular metabolism underlying many diseases, including cancer. Here, we demonstrated a unique and novel application to the treatment of malignancy using a short-chain fatty acid (SCFA)-encapsulated lipid-based delivery system - liposome-encapsulated acetate nanoparticles for cancer applications (LITA-CAN). We assessed chronic in vivo administration of our nanoparticle in three separate murine models of colorectal cancer...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28931213/a-review-on-the-efficacy-and-toxicity-of-different-doxorubicin-nanoparticles-for-targeted-therapy-in-metastatic-breast-cancer
#9
REVIEW
Ayman Shafei, Wesam El-Bakly, Ahmed Sobhy, Omar Wagdy, Ahmed Reda, Omar Aboelenin, Amr Marzouk, Khalil El Habak, Randa Mostafa, Mahmoud A Ali, Mahmoud Ellithy
In metastatic breast cancer (MBC), the conventional doxorubicin (DOX) has various problems due to lack of selectivity with subsequent therapeutic failure and adverse effects. DOX- induced cardiotoxicity is a major problem that necessitates the presence of new forms to decrease the risk of associated morbidity. Nanoparticles (NPs) are considered an important approach to selectively increase drug accumulation inside tumor cells and thus decreasing the associated side effects. Tumor cells develop resistance to chemotherapeutic agents through multiple mechanisms, one of which is over expression of efflux transporters...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28926967/preparation-characterization-and-preliminary-in-vitro-testing-of-nanoceria-loaded-liposomes
#10
Agostina Grillone, Tianshu Li, Matteo Battaglini, Alice Scarpellini, Mirko Prato, Shinji Takeoka, Gianni Ciofani
Cerium oxide nanoparticles (nanoceria), well known for their pro- and antioxidant features, have been recently proposed for the treatment of several pathologies, including cancer and neurodegenerative diseases. However, interaction between nanoceria and biological molecules such as proteins and lipids, short blood circulation time, and the need of a targeted delivery to desired sites are some aspects that require strong attention for further progresses in the clinical application of these nanoparticles. The aim of this work is the encapsulation of nanoceria into a liposomal formulation in order to improve their therapeutic potentialities...
September 16, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28923840/apoptotic-bodies-elicit-gas6-mediated-migration-of-axl-expressing-tumor-cells
#11
Annelien Jm Zweemer, Cory B French, Joshua Mesfin, Simon Gordonov, Aaron S Meyer, Douglas A Lauffenburger
Metastases are a major cause of cancer mortality. AXL, a receptor tyrosine kinase (RTK) aberrantly expressed in many tumors, is a potent oncogenic driver of metastatic cell motility and has been identified as broadly relevant in cancer drug resistance. Despite its frequent association with changes in cancer phenotypes, the precise mechanism leading to AXL activation is incompletely understood. In addition to its ligand growth arrest specific-6 (Gas6), activation of AXL requires the lipid moiety phosphatidylserine (PS)...
September 18, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28920575/the-p2x7-receptor-forms-a-dye-permeable-pore-independent-of-its-intracellular-domain-but-dependent-on-membrane-lipid-composition
#12
Akira Karasawa, Kevin Michalski, Polina Mikhelzon, Toshimitsu Kawate
The P2X7 receptor mediates extracellular-ATP signaling implicated in the development of devastating diseases such as chronic pain and cancer. Activation of the P2X7 receptor leads to opening of the characteristic dye-permeable membrane pore for molecules up to ~900 Da. However, it remains controversial what constitutes this peculiar pore and how it opens. Here we show that the panda P2X7 receptor, when purified and reconstituted into liposomes, forms an intrinsic dye-permeable pore in the absence of other cellular components...
September 18, 2017: ELife
https://www.readbyqxmd.com/read/28920496/spin-rapid-synthesis-purification-and-concentration-of-small-drug-loaded-liposomes
#13
Steven A Roberts, Neil Parikh, Ryan J Blower, Nitin Agrawal
Liposomes are one of the most studied nano-delivery systems. However, only a handful of formulations have received FDA approval. Existing liposome synthesis techniques are complex and specialized, posing a major impediment in design, implementation, and mass production of liposome delivery systems as therapeutic agents. Here, we demonstrate a unique 'synthesis and purification of injectable nanocarriers' (SPIN) technology for rapid and efficient production of small drug loaded liposomes using common benchtop equipment...
September 18, 2017: Journal of Liposome Research
https://www.readbyqxmd.com/read/28920483/hydroxycamptothecin-liposomes-based-on-thermal-and-magnetic-dual-responsive-system-preparation-in-vitro-and-in-vivo-antitumor-activity-microdialysis-based-tumor-pharmacokinetics
#14
Hai-Mei Zhu, Jin-Hui Gu, Yi Xie, Bo Xie, Jia-Jun Ling
Due to the absence of lactone form of hydroxycamptothecin, the commercially available hydroxycamptothecin injection exhibits inefficient therapeutic effects. In this study, we constructed a novel delivery system (thermosensitive magnetic liposomes) that protects lactone form of hydroxycamptothecin from blood or water. After hydroxycamptothecin was loaded into the thermosensitive magnetic liposome(HCPT/TML),its in vitro and in vivo antitumor activity and microdialysis-based tumor pharmacokinetics were determined...
September 18, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28919747/ge11-peptide-conjugated-nanoliposomes-to-enhance-the-combinational-therapeutic-efficacy-of-docetaxel-and-sirna-in-laryngeal-cancers
#15
Wei-Wei Xu, Da-Yu Liu, Ying-Chun Cao, Xiang-Yun Wang
In this study, dual therapeutic-loaded GE11 peptide-conjugated liposomes were developed and applied to enhance therapeutic efficacies of standard-of-care regimens for the treatment of laryngeal cancer. The therapeutic strategy used here was a combination treatment with the chemotherapeutic docetaxel (DTX) and siRNA against the ABCG2 gene that regulates multidrug resistance in many tumor types. Liposome-encapsulated DTX/ABCG2-siRNA molecules were targeted to recognize tumor cells of squamous morphology by conjugation to the EGFR-targeting ligand, GE11...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28919304/safety-of-novel-liposomal-drugs-for-cancer-treatment-advances-and-prospects
#16
REVIEW
Keyu He, Meng Tang
Liposome is a kind of prospective abiotic drug delivery system for cancer treatment. Novel liposomes modified with PEG, cationic lipids and highly selective molecules achieve better stability, half-life and selectivity as well as less severe side effects. However, novel liposomes are still not nontoxic. PEG on the surface of liposomes interfere the combination of cancer cells and drugs. Cationic liposomes can induce oxidative damage and cytotoxicity to normal tissues. To further improve the safety of liposomal drugs, liposomal drugs must be highly selective to cancer tissues and cancer cells, at the same time, induce minimum damage to normal cells...
September 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28918045/cationic-nanoliposomes-meet-mrna-efficient-delivery-of-modified-mrna-using-hemocompatible-and-stable-vectors-for-therapeutic-applications
#17
Tatjana Michel, Daniel Luft, Meike-Kristin Abraham, Sabrina Reinhardt, Martha L Salinas Medina, Julia Kurz, Martin Schaller, Meltem Avci-Adali, Christian Schlensak, Karlheinz Peter, Hans Peter Wendel, Xiaowei Wang, Stefanie Krajewski
Synthetically modified mRNA is a unique bioactive agent, ideal for use in therapeutic applications, such as cancer vaccination or treatment of single-gene disorders. In order to facilitate mRNA transfections for future therapeutic applications, there is a need for the delivery system to achieve optimal transfection efficacy, perform with durable stability, and provide drug safety. The objective of our study was to comprehensively analyze the use of 3β-[N-(N',N'-dimethylaminoethane) carbamoyl](DC-Cholesterol)/dioleoylphosphatidylethanolamine (DOPE) liposomes as a potential transfection agent for modified mRNAs...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28917937/pyrazole-based-compounds-in-chitosan-liposomal-emulsion-for-antimicrobial-cotton-fabrics
#18
Ahmed Nada, Marwa Al-Moghazy, Ahmed A F Soliman, Gehan M T Rashwan, Taghreed Hosny Ahmed Eldawy, Ashraf Abd Elhakim Hassan, Galal Hosni Sayed
The chemistry of pyrazoles has gained increasing attention due to its diverse pharmacological properties such as antiviral, antagonist, antimicrobial, anticancer, anti-inflammatory, analgesic, anti-prostate cancer, herbicidal, acaricidal and insecticidal activities. 1-Phenyl pyrazole-3, 5-diamine, 4-[2-(4-methylphenyl) diazenyl] and 1H- pyrazole-3 (1), 5-diamine, 4-[2-(4-methylphenyl) diazenyl] (2) were synthesized, characterized and encapsulated into liposomal chitosan emulsions for textile finishing. The chemical modifications of cotton fabrics were demonstrated by infrared analysis...
September 13, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28916497/two-step-polymer-and-liposome-enzyme-prodrug-therapies-for-cancer-pdept-and-pelt-concepts-and-future-perspectives
#19
Anna Scomparin, Helena F Florindo, Galia Tiram, Elaine L Ferguson, Ronit Satchi-Fainaro
Polymer-directed enzyme prodrug therapy (PDEPT) and polymer enzyme liposome therapy (PELT) are two-step therapies developed to provide anticancer drugs site-selective intratumoral accumulation and release. Nanomedicines, such as polymer-drug conjugates and liposomal drugs, accumulate in the tumor site due to extravasation-dependent mechanism (enhanced permeability and retention - EPR - effect), and further need to cross the cellular membrane and release their payload in the intracellular compartment. The subsequent administration of a polymer-enzyme conjugate able to accumulate in the tumor tissue and to trigger the extracellular release of the active drug showed promising preclinical results...
September 12, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28912139/a-combination-rnai-chemotherapy-layer-by-layer-nanoparticle-for-systemic-targeting-of-kras-p53-with-cisplatin-to-treat-non-small-cell-lung-cancer
#20
Li Gu, Jason Z Deng, Sweta Roy, Paula T Hammond
PURPOSE: Mutation of the Kirsten ras sarcoma viral oncogene homolog (KRAS) and loss of p53 function are commonly seen in non-small cell lung cancer (NSCLC). Combining therapeutics targeting these tumor defensive pathways with cisplatin in a single nanoparticle platform are rarely developed in clinic. EXPERIMENTAL DESIGN: Cisplatin was encapsulated in liposomes which multiple polyelectrolyte layers including siKRAS and miR-34a were built on to generate multifunctional layer-by-layer nanoparticle...
September 14, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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